IS 10714( Pati 40 ): 2006 ISO 128-40:2001 mm /ndian Standard TECHNICAL DRAWINGS -- GENERAL OF PRESENTATION PRINCIPLES PART 40 BASIC CONVENTIONS FOR CUTS AND SECTIONS Ics 01.100.01 @ BIS 2006 BUREAU MANAK OF 9 NEW INDIAN BAHADUR DELHI STANDARDS SHAH 11GO02 Price Group 3 ZAFAR MARG BHAVAN, Apri/ 2006 Drawings Sectional Committee, PG 24 NATIONAL FOREWORD This Indian Standard (Part 40) which is identical with ISO 128-40 : 2001 `Technical drawings -- General principles of presentation -- Part 40: Basic conventions for cuts and sections' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Drawings Sectional Committee and approval of the Production and General Engineering Division Council. ISO 128 was published in 1982 and was accordingly adopted as.lS 10714:1983. withdrawn and published again in several parts, In view of this, Drawin-gs Sectional to adopt ISO 128-40:2001 as IS 10714 (Part 40). ISO 128:1982 was Committee decided This standard specifies general principles for presenting cuts and sections applicable to all kinds of technical drawings (mechanical, electrical, architectural, civil engineering, etc), following the orthographic projection methods specified in ISO 5456-2. For areas on cuts and sections, representation is according to ISO 128-50. The requirements of reproduction, including microcopying in accordance w'ith ISO 6428 has also been taken care of in this standard. It is applicable for all kinds of technical drawings, imluding, for example, those engineering and construction. It K applicable to both manual and computer-based applicable to three-dimensional CAD models. The other parts of this series IS 10714 (Part 20) :2001 are given as follows: Technical drawings -- General Basic conventions for lines principles of presentation: Part 20 used in mechanical drawings. !t is not IS 10714 (Part 21) :2001 Technical drawings -- General principles Preparation of lines by CAD systems of presentation: Part 21 The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following: a) Wherever the words, `International read as `indian Standard'. Standard' appear, referring to this sttiard, they shQuld be b) Comma ( , ) has been used as a decimal marker while in Indian Standards, is to use a point ( ) as the decimal marker. the current practice In this adopted standard, reference appears to certain International Standards for which Indian Standards also exists. "The corresponding Indian Standards, which are to be substituted in their places, are listed below along with their degree of equivalence for the editions indicated: International Standard Corresponding Indian Standard Degree of Equivalence Identical ISO 3098-0:1997 Technical product documentation -- Lettering -- Part O : General requirements ISO 5456-2 : 1996 Technical drawings -- Projection methods -- Part 2: Orthographic representations ISO 6428 : 1982 Technical drawings -- Requirements for microcopying IS 9609 (Pa-rt O) :2001 Technical product documentation -- Lettering: Part O"General requirements IS 15021 (Part 2) :2001 Technical drawings -- Projection methods: Part 2 Orthographic representations IS 10164: 1985 Requirements execute technical drawings microcopying (first revision) to for do do ( Continued on third cover) IS 10714 (Pati 40) :2006 ISO 1284:2001 Indian Standard TECHNICAL DRAWINGS -- GENERAL OF PRESENTATION PRINCIPLES PART 40 BASIC CONVENTIONS FOR CUTS AND SECTIONS 1 Scope This part of ISO 128 specifies the general principles for presenting cuts and sections applicable to all kinds of technical drawings (mechanical, electrical, architectural, civil engineering, etc.) following the orthographic projection methods specified in ISO 5456-2. For areas on `cuts and sections, representation is according to ISO 128-50. Attention has also been given in this part of ISO 128 to the requirements accordance with ISO 6428. of reproduction, including microcopying in 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 128. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 128 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 128-23:1999, drawings Technical drawings -- Geneml principles of presentation -- Part 23: Lines on construction ISO 128-24:1999, Technics/ engineering drawings. drawings -- General principles of presentation -- Part 24: Lines on mechanical ISO 128-30, Technical drawings -- General principles ISO 128-50, Technical drawings -- General principles areas on cuts and sections. ISO 3098-0, Technical product documentation of presentation of presentation -- Part 30: Basic conventions -- Part 50: Basic conventions for views. for representing -- Lettering -- Part O: General requirements. representations. ISO 5456-2, Technical drawings -- Projection methods -- Part 2: Orthographic ISO 6428, Technical drawings -- Requirements ISO 10209-1, Technical product general and types of drawings. documentation for microcopying, -- Vocabulary -- Part 1: Terms relating to technical drawings: ISO 10209-2, Technical product documentation ISO 81714-1, -- Vocabulary -- Part 2: Terms relating to projection methods. Design of graphical symbols for use in the technical documentation of products -- Part 1: Basic rules. 1 IS 10714 (Part 40) :2006 1S0 1284:2001 3 Terms and definitions of this part of ISO 128, the terms and definitions given in ISO 10209-1 and ISO 10209-2, and-the For the purposes following, apply. . 3.1 cutting plane imaginary plane at which the object represented 3.2 cutting is cut through line the position of a cutting plane, or the sectioning axis in the case of two or more cutting planes line indicating 3.3 cut sectional view in addition, outlines beyond the cutting plane section showing, NOTE This is an extract from ISO 10209-1:1992 (term 2.2). However, the usage of the terms "cW and "section" differs between the mechanical engineering and construction fields. While "cut" is generally used in the construction field, "section" is generally used in the mechanical engineering field, regardless of the definitions in 3.3 or 3.4. 3.4 section representation showing only the outlines of an object lying in one or more cutting planes NOTE This is an extract from ISO 10209-1:1992 (term 2.9). However, the usage of the terms "cur and "section" differs between the mechanical engineering and constructionfields. While "cut" is generally used in the construction field, "section" is generally used in the mechanical engineering field, regardless of the definitions in 3.3 or 3.4. 3.5 half cutialf section representation of a symmetrical 3.6 local cutilocal representation object which, divided by the centre line, is drawn half in view and half in cut or section section in which only a part of an object is drawn in cut or section 4 General of views (see ISO 128-30) apply equally when drawing cuts and sections. The general rules for the arrangement Each cut and section shall be given clear identification with twice the same capital letter, once at each of the reference arrows (drawn with a continuous wide line of type 01.2.8 according to ISO 128-24:1999 or 01.2.8 according to ISO 128-23:1999) indicating the direction of viewing for the relevant cut and section, at the ends of the cutting line (see annex A). This identification should be positioned for reading from the bottom of the drawing. The 30° or 90° cut and section arrow is defined in annex A, as is the lettering height of the identification. The designated cut and section may be located irrespective of the view in which the cutting plane is taken. The identification of the referenced cuts and sections shall be placed immediately above the relevant representation. Representation of areas on cuts and sections is covered by ISO 128-50. The position of the cutting plane(s) shall be indicated by means of a long-dashed dotted wide line (cutting line) of the type 04.2 according to 1S0 128-24:1999 or 04.2.1 according to ISO 128-23:1999. A straight cutting plane shall be drawn to a suitable length for legibility (see Figure 1). 2 IS 10714 -(Pad 40) :2008 ISO 1284:2001 If the cutting plane changes its direction, the cutting line should only be drawn at the ends of the cutting plane, where the cutting plane changes direction (see Figure 2). The cutting line may be drawn to its full length (with a long-dashed dotted narrow line of the type 04.1 according ISO 128-24:1999 or 04.1 according to ISO 128-23:1999) if necessary for its legibility. to . I t `+ A figure 1 -- Example from construction field B B-B c-c c B Hgure 2 -- Example from mechanical engineering field c IS 10714 (Part 40) :2006 ISO 128-40:2001 5 Sections revolved in the relevant view . If unambiguous, a section can be revoived in the relevant view. If this is done, the outline of the section shall be drawn with continuous narrow lines of the type 01.1.16 according to ISO 128-24:1999 or 01.1.11 according to ISO 128-23:1 999; further identification is then not necessary [see Figure 3 a) and b)]. NOTE The rotational direction of the section in the view is unknown. a) Example 1 Figure 3 -- Sections revolved in relevant b) view Example 2 6 Cuts/sections of symmetrical parts (see Figure 4). Symmetrical parts may be drawn half in view and half in cutisection Figure 4 -- Half in section of symmetrical part 7 Local cuts/sections A local cuffsection may be drawn if a complete or a half cutisection is unnecessary. The local break shall be shown by a continous narrow line with zigzags or freehand of type 01.1.19 or 01.1.18 according to ISO 128-24:1999 or 01.1.14 according to ISO 128-23:1999. See Figure 5. Figure 5 -- Local cut 4 IS 10714 (Pad 40): 2008 ISO 1284:2001 Annex A (normative) Graphical symbols A.1 General In order to harmonize the sizes of the graphical symbols specified in this part of ISO 128 with those of the other inscriptions on the drawing (dimensions, tolerances, etc.), the rules given in ISO 81714-1 shall apply. The cut and section identification by a factor of h. lettering height, h, shall be larger than the normal lettering on the technical drawing Within Figures A.1 and A.2, lettering type B, vertical, according to ISO 3098-0, applies. Other lettering types are also permitted. A.2 Cut and section arrows See Figure A. 1 for 30° cut and section arrows, and Figure A.2 for 90° cut and section arrows. 0 0 m Figure A.1 0 0 m Figure A.2 5 IS 1W14 (Pati 40): 2006 lSO128~ :2001 Bibliography [1] ISO 128-20, Twhnica/ drawings -- General principles of presentation -- Part 20: Basic conventions for lines. . ( Continued from second cover) Inferrrational Standard Corresponding Indian Standard Degree of Equivalence Identical ISO 10209-1:1992 Technical product docummtation -- Vocabulary -- Part 1 : Terms relating to technical drawings general and types of drawings ISO 10209-2:1993 Technical product -- documentation -- Vocabulary Part 2: Terms relating to projection methods IS 8930 (Part 1) : 1995 Technical product documentation -- Vocabulary: Part 1 Terms relating to technical drawings general and types of drawings IS 8930 (Part 2) : 2001 Technical product documentation --Vocabulary: Part 2 Terms relating to projection methods do The Sectional Committee responsible for formulation of this standard has reviewed the provisions of the following International Standards for which references have been made in the text and decided that they are acceptable for use in conjunction with this standard: International Standard Technical drawings -- General Lines on construction drawings Title principles of presentation -- Part 23: ISO .128 -23:1999 ISO 128-24:1999 Technical drawings -- General principles of presentation Lines on mechanical engineering drawings Technical drawings -- General Basic conventions for views principles of presentation -- Part 24: ISO 128-30 -- Part 30: ISO 128-50 Technical drawings -- General principles of presentation -- Part 50: Basic conventions for representing areas on cuts and sections Design of graphical symbols for use in the technical products -- Part 1 : Basic rules documentation of ISO 81714-1 Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. 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